[FEATURE] Feature Request or Guidance on Customizing Submit Key for SelectView about cursive

[gyscos]

Hi, and thanks for the report!

You can wrap a SelectView (or any other view) in another view that can intercept events, and, for example, trigger another action on "space" events.

The OnEventView is a convenient way to do that.

There are several ways to configure the callback, but here we'll go with the method that gives us the most control: on_pre_event_inner. It runs before the event is given to the wrapped view, and will have direct access to the wrapped view itself, allowing us to return another callback to run on &mut Cursive.

use cursive::views::{SelectView, OnEventView};

let select_view = SelectView::new();

let wrapped = OnEventView::new(select_view).on_pre_event_inner(' ', |view, _event| {
    use cursive::event::{Event, Key};
    Some(view.on_event(Event::Key(Key::Enter)))
});

Here we just pretend it was an Enter key. If SelectView::submit was public, you could directly call that instead. I'm not sure why it's not public at the moment - I'll probably make it public soon, so you could do the same more explicitly (without having to fake an Enter key).

You could also override the Enter key, to prevent the SelectView from seeing it:

use cursive::views::{SelectView, OnEventView};

let select_view = SelectView::new();

use cursive::event::{Event, Key};

let wrapped = OnEventView::new(select_view)
    .on_pre_event_inner(' ', |view, _event| {
        Some(view.on_event(Event::Key(Key::Enter)))
    })
    .on_pre_event_inner(Key::Event, |_view, _event| {
        // Returning `Some` here means the wrapped view does not get to see that event.
        Some(EventResult::Ignored)
    });